Luffing davit



A. P. SCHAT LUFFING DAVIT Filed Feb. 28, 1941 2 Sheets-Sheet 1 1. m.. w N` v E n \1, Pf n. n .o n h M l D f\ m l N fw Oct. 26, 1943. A. P. scHA'r 2,332,871

LUFFING DAVIT Filed Feb. 28, 1941 2 Sheets-Sheet 2 its smaller side.

Patented Oct. 26, 1943 LUFFING DAVIT Ane ieter Schat, Utrecht, Netherlands; vested in the Alien Property Custodian Application February 28, 1941, Serial No. 381,116 In Great Britain July 27, 1939 1 Claim.

This invention relates to lufng davits of the type comprising a substantially right triangular frame hinged to deck along its smaller side and engaged at its top by a screw spindle by means of which it can be swung inboard and outboard.

Inaccordance with my present invention, a davit of this type supports a rope reel, which is preferably provided with a suitable brake, and which is adapted to receive at least one fall of the boatsuspended from said davit. Preferably the reel is adapted to receive both falls.

Mounting such a reel in the davit frame has the advantage that the rope reel does not occupy any deck space and that it is disposed quite near to the ships side, so that the operator can keep his eye on the descending boat while paying out the fall or falls.

In order that my invention may be more fully understood, the same will be further described with reference to the annexed drawings, in which:

Fig. 1 is a side elevational View of a life boat suspended from two davits of the type referred to, one davit supporting a rope reel for receiving both falls,

`Fig. 2 is a front view of said reel supporting davit, and

Fig. 3 is a diagram showing one preferred maner in which the falls may be reeved.

In Fig. 1, the reference numeral 4 designates a life boat suspended, by tackles A and B, from the tops of two davits 5 and B each comprising a right triangular frame hinged to the deck 'I along Said davits are engaged, at their tops, by screw spindles 8 and 9, respectively, by means of which they can be swung inboard and outboard in a manner well known in the art.

Mounted in the lower part of davit 6 is a rope reel I0 rotatable about a horizontalaxis in parallel relation with the axis of rotation of the davit, and wound thereon are the hauling parts of both boat falls II and I2. The reel is provided with a suitable` brake I2' operable by means of a hand lever I3.

As will be seen from Fig. 1, the `standing part of fall II is belayed on cleats or the like I4 secured to davit 5, the hauling part thereof running from guide'pulley I5 mounted at the top of davit 6, to the central pulley of the top block of tackle A suspended from davit 5, thence to the central pulley of the lower block `of said tackle, and via the outer pulleys of both blocks to the cleat I 4. It has been found that in this manner the fall is entirely prevented from fouling.

What I claim is:

In an arrangement of the character described a pair of luiiing davits mounted on the deck of a ship for supporting a lifeboat therebetween, each davit comprising a substantially right triangular frame pivotally mounted on the deck at each corner of the base of said frame, means pivotally` mounted inboard of each frame and operatively engaging the top of each frame for swinging the frames outboard and inboard, a reel totally supported by and mounted for rotation in one of said frames, braking means for the reel, means for supporting a lifeboat between the frames including one or more guide pulleys mounted on each frame, pulley blocks suspended from each frame, pulley blocks releasably connected to each end of the lifeboat, and a pair of hoisting cables wound on the reel, one of the cables being trained over one of the guide pulleys on the frame carrying the reel and thence being trained over the block on the adjacent end of the boat and the sus-` pended` pulley block and secured to the suspended block, the other cable being trained over another of the guide pulleys on the frame carrying the reel to the suspended block on the other frame and thence trained between the suspended block'and the block on the adjacent end of the boat and nally being-extended from this last mentioned block and trained over the guide pulley on the adjacent frame and being secured thereon so that the cables are prevented from fouling.

ANE PIETER SCHAT. 

